Besides those physical things like loons and misty mornings ect. the thing I missed most was just being outside. I love being outside and I feel deprived when I'm stuck inside without much quality outside time. When I started working construction and was outside 65 to 70 hours per week in all weather I no longer had that need. That was a good thing because I had very little time to trip anyway. Since retiring, I now get to spend a lot of time outside. I also get in a lot of paddling. I would say that at one time I needed to trip. Now it isn't as much a "need" as it is a desire.